The model was built by the agency and used by military and intelligence leaders to plan the raid. The once-classified model is scaled at 1 inch to 7 feet and each object in the model existed at one time at the original compound.

A year after Osama bin Laden was killed by U.S. forces, President Barack Obama and his national security advisors recounted the meticulous planning and intense meetings held before the president made his final decision to go forward with the mission against bin Laden. NBC's Brian Williams reports.